Spectral imaging system and method based on diffraction lens/zoom lens array

Abstract

The invention relates to a spectral imaging technology, and in particular relates to a spectral imaging system and method based on a diffraction lens / zoom lens array, and aims at solving the problemsthat an existing spectrograph is complex in structure, high in manufacturing cost and poor in spatial resolution of a formed image. According to the technical scheme, the spectral imaging system basedon the diffraction lens / zoom lens array comprises the diffraction lens array, the zoom lens array, a photoelectric detector array, a control unit and a data processing unit. The diffraction lens array, the zoom lens array and the photoelectric detector array are sequentially arranged on the same optical path, the optical path comprises N wavelength spectrum bands, and N is greater than or equal to 2; the control unit is electrically connected with the zoom lens array, the control unit is used for adjusting the focal length of the zoom lens array, and the data processing unit is electrically connected with the photoelectric detector array; the invention further provides a method of the spectral imaging system based on the diffraction lens / zoom lens array.

Description

technical field [0001] The invention relates to spectral imaging technology, in particular to a spectral imaging system and method based on a diffraction lens / zoom lens array. Background technique [0002] The imaging spectrometer combines imaging technology and spectral measurement technology, and simultaneously obtains two-dimensional spatial information and wavelength distribution information, which can improve the accuracy of target detection and conduct more in-depth analysis and judgment on the detection target. [0003] Imaging spectrometers are mainly divided into four types: the first is dispersive imaging spectrometer, which splits the spectrum of each point of the object through the dispersive element and projects them onto the pixels of the detector respectively, and obtains its spectral image by scanning the object. Imaging spectrometers can usually achieve higher spatial resolution and spectral resolution, but are difficult to process and expensive; [0004] T...

AI Technical Summary

Problems solved by technology

[0008] The invention provides a spectral imaging system and method based on a diffraction lens / zoom lens array to overcome the problems of complex structure, high manufacturing cost and poor spatial resolution of the formed image in the existing spectrometer

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